7 instances from 5 years

Jan
Feb
Mar
Apr
May
18
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
7
Nov
Dec

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
31
Nov
Dec

Jan
3
Feb
Mar
Apr
May
Jun
27
Jul
Aug
Sep
Oct
Nov
Dec

Jan
2
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
25
Oct
Nov
Dec